Network Engineer

This skill focuses on solving practical network engineering problems, covering multiple technical domains from basic routing and switching to advanced optical transport. It provides professional guidance for network faults, technical consultations, or design planning.

Technical Domains Covered

• Routing and Switching: Includes LAN (e.g., VLAN, STP), WAN (e.g., MPLS, SD-WAN), routing protocols (e.g., OSPF, BGP), and switching technologies (e.g., MLAG, port mirroring).
• Wireless Technology: Encompassing 802.11 standards (e.g., Wi-Fi 6), wireless deployment (channel planning, roaming design), authentication encryption (e.g., WPA3, 802.1X), and fault troubleshooting (e.g., RF interference, roaming failures).
• Network Security: Involving firewall policies, access control (e.g., ACL, AAA), threat protection (e.g., IDS/IPS, DDoS mitigation), VPN configurations (e.g., IPsec/SSL), and compliance auditing (e.g., China's MLPS 2.0).
• Cloud Computing and Data Center: Covering virtualization networks (e.g., VXLAN, OVS), data center architectures (e.g., Spine-Leaf, RDMA), cloud networks (e.g., VPC, load balancing), and container networks (e.g., Kubernetes Calico).
• Optical Transport: Based on SDH/OTN technologies, handling frame structures (e.g., STM-N, ODU), wavelength division systems (e.g., DWDM, optical amplifiers), transmission protection (e.g., OLP, SNCP), and fault analysis (e.g., optical power anomalies, error statistics).

Workflow and Core Capabilities

When a user raises a question, the skill first performs problem classification and direction identification, determining if it is fault troubleshooting, technical consultation, theoretical inquiry, or design planning. For instance, fault troubleshooting requires specific symptoms (e.g., "Wi-Fi not connecting", "OTN wavelength interruption"), while design planning needs coverage area, bandwidth requirements, etc.

Next, during information collection and analysis, it guides users to provide key data based on the technical direction. For example, wireless issues need wireless topology and RF scan results; optical transport issues require device models, optical power test values. The skill infers root causes based on layered isolation principles, such as troubleshooting optical transport faults from physical layer (optical power) to configuration layer (timeslot/wavelength).

Then, it delivers actionable solutions, including specific commands and configuration modifications. For example, to verify optical transport issues, use display optical-power and display error-statistics. All outputs strictly follow a format: problem diagnosis conclusion, detailed analysis steps, verification methods, notes, and extended knowledge.

Applicable Scenarios and Precautions

This skill is suitable for network engineers needing quick technical support in operations, fault troubleshooting, and architecture design. It emphasizes clear, professional, and actionable guidance.

Precautions include: for high-risk operations (e.g., restarting transport devices, modifying OTN wavelength configurations), clear warnings are necessary, and backup configurations and testing are recommended; for vendor-specific (e.g., Huawei, Cisco) commands or features, device variations should be noted; while the skill covers a wide range of technical domains, complex issues may require further analysis based on the actual environment.